14.- Castilloa Rubber Trees.
The " Ule " rubber of Central America and British Honduras originates from Castilloa elastica.
The Castilloa tree has been experimentally planted in Ceylon, the West Indies and other countries (Plate II.
This method is said to answer well with the latex of Castilloa, but it appears to be inapplicable to the latex of Hevea, which does not cream readily when centrifugalized.
The source of " Ule " rubber exported from Central America, and of the " Caucho " rubber of Peru is Castilloa elastica, Cerv., a lofty tree, N.
It is found also in Costa Rica, Guatemala, Honduras, Mexico, Cuba and Hayti, and in Panama with another species of Castilloa, and on the W.
- Castilloa elastica.
The Castilloa tree appears to be suitable for cultivation only in districts where the Para rubber would grow equally well.
Much of the native Castilloa rubber is of inferior quality.
Several other species of Castilloa than C. elastica are known to furnish rubber, but little has been recorded as to their advantages.
Hevea and Castilloa, the resin is present in large proportion in the latex derived from young trees, and diminishes in amount as the tree ages.
RUBBERS Para Ceara Castilloa Ficus Landolphia Para Latex Rubber Rubber Rubber Elastica Kirkii (Ceylon).
Rubber plantations have also been laid out, principally by American companies, the Castilloa elastica doing well.
Brasiliensis, and the latter from the Castilloa elastica and some other varieties.
Among the more important and conspicuous trees of these tropical forests are mahogany, rosewood, Spanish cedar (Cedrela), cassias, ceibas (Bombax), rubber (Castilloa), palms of many species including the oil-producing Attalea of Manzanillo and Acrocomia of Acapulco, guayacan (Guaiacum), logwood (Haematoxylon campechianum), brazilwood (H.
The production of rubber is becoming an important industry, large plantations having been set with both Hevea and Castilloa rubber trees.
K., or Arracacha esculenta), indigo, rubber (Castilloa), ivorynuts, cinchona and bread-fruit.
The product is derived from the Castilloa elastica, the Heveas not being found west of the Andes.